package com.blustreaksw.cyclecoach.main;

import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.Fragment;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.blustreaksw.cyclecoach.MainActivity;
import com.blustreaksw.cyclecoach.R;
import com.blustreaksw.cyclecoach.UserManagementActivity;
import com.blustreaksw.cyclecoach.UserProfileActivity;
import com.blustreaksw.cyclecoach.data.UserProfile.MeasurementUnits;
import com.blustreaksw.cyclecoach.history.WorkoutHistoryActivity;
import com.blustreaksw.cyclecoach.history.WorkoutHistoryContainer;
import com.blustreaksw.cyclecoach.userManagment.Fragment_Wizard_DataExport;
import com.blustreaksw.cyclecoach.userManagment.Fragment_Wizard_SensorConfiguration;
import com.blustreaksw.cyclecoach.userManagment.Fragment_Wizard_UserProfile;
import com.blustreaksw.cyclecoach.util.ConfirmationDialogFragment;

public class Fragment_CentralNavigation extends Fragment {

	private static final String TAG = "Fragment_CentralNavigation";
	private DrawerLayout mDrawerLayout;
    private ListView mDrawerList;
    private ActionBarDrawerToggle mDrawerToggle;

    private CharSequence mDrawerTitle;
    private CharSequence mTitle;
    private String[] mNavDrawerMenuOptions;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
		setRetainInstance(true);
    }
    
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
		View v = inflater.inflate(R.layout.fragment_navdrawer, container, false);
    	mTitle = mDrawerTitle = getActivity().getActionBar().getTitle();
        mNavDrawerMenuOptions = getResources().getStringArray(R.array.navDrawerMenuOptions);
        mDrawerLayout = (DrawerLayout) v.findViewById(R.id.drawer_layout);
        mDrawerList = (ListView) v.findViewById(R.id.left_drawer);

        // set a custom shadow that overlays the main content when the drawer opens
        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
        // set up the drawer's list view with items and click listener
        mDrawerList.setAdapter(new ArrayAdapter<String>(getActivity(),
                R.layout.drawer_list_item, mNavDrawerMenuOptions));
        mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

        // enable ActionBar app icon to behave as action to toggle nav drawer
        getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);
        getActivity().getActionBar().setHomeButtonEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the sliding drawer and the action bar app icon
        mDrawerToggle = new ActionBarDrawerToggle(
                getActivity(),                  /* host Activity */
                mDrawerLayout,         /* DrawerLayout object */
                R.drawable.ic_drawer,  /* nav drawer image to replace 'Up' caret */
                R.string.drawer_open,  /* "open drawer" description for accessibility */
                R.string.drawer_close  /* "close drawer" description for accessibility */
                ) {
            public void onDrawerClosed(View view) {
                getActivity().getActionBar().setTitle(mTitle);
                getActivity().invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            }

            public void onDrawerOpened(View drawerView) {
            	getActivity().getActionBar().setTitle(mDrawerTitle);
            	getActivity().invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
            }
        };
        mDrawerLayout.setDrawerListener(mDrawerToggle);

        if (savedInstanceState == null) {
            selectItem(0);
        }
        
        return v;
    }

    

    /* Called whenever we call invalidateOptionsMenu() */
    @Override
    public void onPrepareOptionsMenu(Menu menu) {
        // If the nav drawer is open, hide action items related to the content view
        boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
        menu.findItem(R.id.action_changeUser).setVisible(!drawerOpen);
        menu.findItem(R.id.action_history).setVisible(!drawerOpen);
        
        menu.findItem(R.id.scanning_indicator).setActionView(R.layout.progress_indicator).setVisible(false);
		menu.findItem(R.id.action_createUserWizard_restartDeviceScan).setVisible(false);
		menu.findItem(R.id.action_musicPlayerExternalLink).setVisible(false);
		menu.findItem(R.id.action_createUserWizard_cancelButton).setVisible(false);
		
		if(drawerOpen) {
			getActivity().getActionBar().setSubtitle(null);
		} else {
			getActivity().getActionBar().setSubtitle("User: " + ((UserProfileActivity)getActivity()).getUserProfile().getUserName());
		}
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
         // The action bar home/up action should open or close the drawer.
         // ActionBarDrawerToggle will take care of this.
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }
        // Handle action buttons
        switch(item.getItemId()) {
        case R.id.action_changeUser:
            startActivity(new Intent(getActivity(), UserManagementActivity.class));
            getActivity().finish();
            return true;
            
        case R.id.action_history:
        	startActivity(new Intent(getActivity(), WorkoutHistoryActivity.class));
        	return true;
        	
        default:
            return super.onOptionsItemSelected(item);
        }
    }

    /* The click listener for ListView in the navigation drawer */
    private class DrawerItemClickListener implements ListView.OnItemClickListener {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            selectItem(position);
        }
    }

    private void selectItem(final int position) {
    	
    	if(((UserProfileActivity)getActivity()).isProfileModified() && ((UserProfileActivity)getActivity()).validateFields() == true) {
    		new ConfirmationDialogFragment().configureDialog(new DialogInterface.OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int arg1) {
					// Handle Ok
					((UserProfileActivity)getActivity()).getUserProfile()
						.updateUserFromCurrentProfileValues(getActivity().getApplicationContext());
					replaceFragment(position);
					((UserProfileActivity)getActivity()).clearProfileModified();
					WorkoutHistoryContainer.setMeasurementUnits(
							((UserProfileActivity)getActivity()).getUserProfile().getDisplayUnits().equals(MeasurementUnits.METRIC));
				}
			}, new DialogInterface.OnClickListener() {

				@Override
				public void onClick(DialogInterface dialog, int arg1) {
					// Handle Cancel
					((UserProfileActivity)getActivity()).getUserProfile()
						.loadUserFromDb(((UserProfileActivity)getActivity()).getUserProfile().getId());
					replaceFragment(position);
					((UserProfileActivity)getActivity()).clearProfileModified();
				}
			//}, "Save Changes?", "Click Okay to save changes, or Cancel to restore original values.", getActivity())
			}, "Save Changes?", null, getActivity())
			.onCreateDialog(null).show();
    	} else {
    		replaceFragment(position);
    	}
    }
    
    
    private void replaceFragment(int position) {
    	
    	final String selection = getResources().getStringArray(R.array.navDrawerMenuOptions)[position];
    	Fragment fragment;
    	if(selection.equals("Start Workout")) {
    		fragment = new Fragment_WorkoutSelection();
    	} else if(selection.equals("User Profile")) {
    		fragment = new Fragment_Wizard_UserProfile();
    		
    	} else if(selection.equals("BT Sensors")) {
    		fragment = new Fragment_Wizard_SensorConfiguration();
    		
    	} else if(selection.equals("Data Export")) {
    		fragment = new Fragment_Wizard_DataExport();
    		
    	} else if(selection.equals("Heart Rate Zones")) {
    		fragment = new Fragment_NotYetImplemented();
    		
    	} else if(selection.equals("Cycle Power Zones")) {
    		fragment = new Fragment_NotYetImplemented();
    		
    	} else if(selection.equals("Audio Cues")) {
    		fragment = new Fragment_NotYetImplemented();
    		
    	} else if(selection.equals("Display Customization")) {
    		fragment = new Fragment_NotYetImplemented();
    		
    	} else if(selection.equals("Workout Customization")) {
    		fragment = new Fragment_NotYetImplemented();
    		
    	} else if(selection.equals("Advanced Settings")) {
    		fragment = new Fragment_NotYetImplemented();
    		
    	} else {
    		return;
    	}
                
        getActivity().getSupportFragmentManager().beginTransaction()
			.replace(R.id.content_frame, fragment).commit();

        // update selected item and title, then close the drawer
        mDrawerList.setItemChecked(position, true);
        setTitle(mNavDrawerMenuOptions[position]);
        mDrawerLayout.closeDrawer(mDrawerList);
    }

    public void setTitle(CharSequence title) {
        mTitle = title;
        getActivity().getActionBar().setTitle(mTitle);
    }

    /**
     * When using the ActionBarDrawerToggle, you must call it during
     * onPostCreate() and onConfigurationChanged()...
     */

    @Override
    public void onResume() {
        super.onResume();
        // Sync the toggle state after onRestoreInstanceState has occurred.
        mDrawerToggle.syncState();
        //setStartingView(((MainActivity)getActivity()).getCentralNavigationStartViewPosition());
        
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Pass any configuration change to the drawer toggle
        mDrawerToggle.onConfigurationChanged(newConfig);
    }
    
    public void setStartingView(int listPosition) {
    	mDrawerList.performItemClick(
    			mDrawerList.getAdapter().getView(listPosition, null, null),
    			listPosition, mDrawerList.getAdapter().getItemId(listPosition));
    }
}
